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Anaplasmosis is a disease caused by the bacterium Anaplasma phagocytophilum. These bacteria are spread to people by tick bites primarily from the Blacklegged Tick (Ixodes scapularis) and (I. pacificus).

Anaplasmosis Symptoms

Symptoms may begin within 1 to 2 weeks of the tick bite and some people can be infected without symptoms. Older adults and people with weak immune systems are more likely to have severe symptoms.

Typical signs and symptoms of anaplasmosis may include: Fever, Severe Headache, Muscle Aches or Chills and Shaking.

Less frequent symptoms of anaplasmosis include nausea, vomiting, loss of appetite, weight loss, abdominal pain, cough, diarrhea, aching joints and change in mental status.

Although people of any age can get anaplasmosis, it tends to be most severe in the aging or immune-compromised.